页面登录权限验证

package com.ujiuye.filter;
import org.springframework.context.annotation.ComponentScan;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.logging.LogRecord;

public class LoginFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest servletRequest = (HttpServletRequest)request;
        HttpServletResponse servletResponse = (HttpServletResponse)response;
        String requestURI = servletRequest.getRequestURI();
        Object loginUser = servletRequest.getSession().getAttribute("loginUser");
			                            //放行static下的jar包           放行登录界面                   放行验证码
        if(loginUser != null || requestURI.contains("static") || requestURI.contains("login") ||  requestURI.contains("code")){
            chain.doFilter(request,response);
        }else{
            servletResponse.sendRedirect(servletRequest.getContextPath()+"/login.jsp");
        }
    }

    @Override
    public void destroy() {
    }
}